lymphatic system 203 Remember the structures of the lymphatic system What are the structures of the lymphatic system 203 Remember the stuctures of the lymphatic system 2 203 Remember the stuctures of the lymphatic system ID: 929871
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Slide1
2.03 Remember the
structures of the
lymphatic system
Slide22.03 Remember the structures of
the lymphatic system
What are the structures of the lymphatic system?
2.03 Remember the stuctures of the lymphatic system
2
Slide32.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
Lymph fluid
Lymph vesselsLymph nodesLymph glands
3
Slide42.03 Remember the stuctures of the lymphatic system
Structures of
the lymphatic
system
4
Lymph
– straw-colored fluid
that leaves
capillary
and
goes into tissue spaces.
Similar to plasma
Aka interstitial fluid
Carries the nutrients, oxygen and hormones to cellsCarries waste back to capillaries
Slide52.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
5
Lymph
vessels
-
transport excess
lymph
fluid
back to
circulatory system
.
Located in almost all tissues and organs
Closely parallel veins
Since
the lymphatic system has no pump, skeletal muscle contractions moves lymph through the vessels
Valves prevent backward
flow
Only move in one directions (from body towards heart)
Slide62.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
6
Lymph vessels parallel to blood vessels
Slide72.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
7
Lymph vessels
Lacteals
Specialized lymph vessels in the small
intestines that absorbs digested fat
Slide8Structures of the lymphatic system
8
Lymph
vessels -
Lymph vessels join together to form larger lymph vessels
Large lymph vessels join together to form lymphatics
T
wo
main lymphatics:
Thoracic
duct
Also called the left lymphatic ductReceives lymph from the left side of chest, head, arm and neck, the entire abdominal area and entire lower bodyDumps back into left subclavian SVCRight lymphatic ductReceives lymph from the right side of the chest, head, arm and neck
Dumps back into right subclavian
SVC
Slide92.03 Remember the stuctures of the lymphatic system
Structures of the lymphatic system
9
Lymph nodes
Tiny
, oval-shaped
structures!
Range
in size from a pinhead to an
almond
Site of lymphocyte formation and filter for screening out harmful substances (ex: bacteria, cancer)
If substances can’t be destroyed, node becomes inflamed
Lymph node
Slide102.03 Remember the stuctures of the lymphatic system
Structures of the
lymphatic
system
10
Lymph
nodes
Where are lymph nodes
located?
Slide112.03 Remember the stuctures of the lymphatic system
Structures of the
lymphatic
system
11
Tonsils
– masses of lymphatic tissue that produce lymphocytes and filter bacteria
3
pairs
Palatine tonsils: sides of throat
Adenoids / Pharyngeal tonsils: upper throat
Lingual
tonsils: back of tongue
Slide122.03 Remember the stuctures of the lymphatic system
Structures of the
lymphatic system
12
Say “
aahhh
”
Why this is helpful?
Slide13Structures of
the lymphatic
system
13
Spleen
Sac-like
mass of lymphatic tissue
LARGEST lymphatic structure
Located in the
LUQ – just below diaphragm
Forms
lymphocytes and
monocytes
Filters bloodStores large amounts of RBCs – contracts during vigorous exercise or loss of blood to release RBCsDestroys or removes old or fragile RBCs – preserves hemoglobin
Slide142.03 Remember the stuctures of the lymphatic system
Thymus gland
Located in the upper, anterior thorax (chest), above the heartProduces T lymphocytes
A
lso
an
endocrine gland because also secretes hormones
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Structures of the
lymphatic
system
Slide152.03 Remember the stuctures of the lymphatic system
Structures of the
lymphatic
system
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Slide162.03 Remember the structures of
the lymphatic system
What are the structures of the lymphatic system?
2.03 Remember the stuctures of the lymphatic system
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